Lightbulbs are little bubbles of vacuum all around us. Like pockets of outer space. 🤔
Conversation
Dammit
Quote Tweet
Replying to @vgr
I mean usually low-pressure argon, though new faux-Edison LEDs probably have 1atm or possibly more to improve cooling.
The incandescent ones sometimes have a little chlorine, the fluorescent sometimes some mercury vapor.



